Fixed database typo and removed unnecessary class identifier.

venv/Lib/site-packages/skimage/io/_plugins/gtk_plugin.py

@@ -0,0 +1,54 @@
+from .util import prepare_for_display, window_manager, GuiLockError
+
+try:
+    # we try to acquire the gui lock first
+    # or else the gui import might trample another
+    # gui's pyos_inputhook.
+    window_manager.acquire('gtk')
+except GuiLockError as gle:
+    print(gle)
+else:
+    try:
+        import gtk
+    except ImportError:
+        print('pygtk libraries not installed.')
+        print('plugin not loaded.')
+        window_manager._release('gtk')
+    else:
+
+        class ImageWindow(gtk.Window):
+            def __init__(self, arr, mgr):
+                gtk.Window.__init__(self)
+                self.mgr = mgr
+                self.mgr.add_window(self)
+
+                self.connect("destroy", self.destroy)
+
+                width = arr.shape[1]
+                height = arr.shape[0]
+                rstride = arr.strides[0]
+                pb = gtk.gdk.pixbuf_new_from_data(arr.data,
+                                                  gtk.gdk.COLORSPACE_RGB,
+                                                  False, 8, width, height,
+                                                  rstride)
+                self.img = gtk.Image()
+                self.img.set_from_pixbuf(pb)
+
+                self.add(self.img)
+                self.img.show()
+
+            def destroy(self, widget, data=None):
+                self.mgr.remove_window(self)
+
+        def imshow(arr):
+            arr = prepare_for_display(arr)
+
+            iw = ImageWindow(arr, window_manager)
+            iw.show()
+
+        def _app_show():
+            if window_manager.has_windows():
+                window_manager.register_callback(gtk.main_quit)
+                gtk.main()
+            else:
+                print('no images to display')